Xlink Modularization is not aimed at the REGULAR users of X link, but at designers of X link-based languages. It had been observed that companies and groups had the tendency to design their own versions of HTML and XHTML that were often not INTEROPERABLE at basic levels. XHTML Modularization splits XHTML into a number of modules that can be individually selected when defining a new language; in this WAY any Xlink-based language that uses tables is guaranteed to use the same definition of tables, and not some divergent version. Modularization also makes it clear where it is OK to add new ELEMENTS, and where it is not.

Xlink Modularization is not aimed at the regular users of X link, but at designers of X link-based languages. It had been observed that companies and groups had the tendency to design their own versions of HTML and XHTML that were often not interoperable at basic levels. XHTML Modularization splits XHTML into a number of modules that can be individually selected when defining a new language; in this way any Xlink-based language that uses tables is guaranteed to use the same definition of tables, and not some divergent version. Modularization also makes it clear where it is OK to add new elements, and where it is not.